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Captcha

Overview

Last updated: 2024-12-30 09:52:39

What is TenDI Captcha?

TenDI Captcha provides web and app developers with comprehensive multi-dimensional human verification services through trajectory analysis, characteristic identification, anti-emulator, and other security mechanisms. It safeguards business security in various scenarios like registration and login, marketing offers, commenting/posting/polling, and data protection.

This service helps you solve the following security problems:
Preventing credential stuffing attacks as well as bulk registration of multiple accounts by bots.
Preventing click farming and coupon abuse by bots in campaigns.
Preventing ad spamming, malicious bumping, and poll fraud.
Preventing from website content and data theft by bots and crawlers.

Features

Non-perception CAPTCHA

Users does not need to answer questions, as the system intelligently assesses the user's risk situation and returns the verification result through the backend API. This is suitable for scenarios that require a high level of user experience.


Slider CAPTCHA

This feature allows users to quickly complete verification by simply sliding the knob. Its ease of use and powerful risk control make it suitable for most human verification scenarios.


Graphic CAPTCHA

Sequentially clicking on the shapes in the image can complete the verification process. This method is suitable for high-security scenarios.


Audio CAPTCHA

By playing the audio, users can complete verification by filling in the content of the audio. Voice verification has unique interaction and strong risk control ability, which is suitable for accessibility scenarios.


Smart verification

This feature intelligently identifies user characteristics. It requests suspicious users to answer verification questions and allows trusted users to directly proceed. This can greatly improve the experience of human users. The verification process is as follows:


Multi-dimensional defense

During the verification, ten security protection mechanisms such as dynamic encryption, virtual machine reinforcement, and anti-emulator are used to defend against malicious activities of the black market.

Accessibility

Disabled users can switch from common verification mode to accessibility mode conveniently. Captcha Service is in compliance with Web Content Accessibility Guidelines (WCAG) 2.1, which makes content more accessible to a wider range of users with disabilities, providing a more friendly and more interactive experience.

Controllable risk control level

TenDI Captcha supports three risk control levels — Loose, General, and Strict.




Verification results

TenDI Captcha automatically blocks malicious user requests using multiple defense approaches.
To be verified
Trusted user: Verification successful
Malicious user: Verification blocked




Statistics

TenDI Captcha provides data that is updated every minute so that you can keep track of business security in real time.
Indicator
Description
Load requests
The number of times the client loads verification.
Verification requests
The number of verifications initiated after a user responds to the verification question.
Verification requests passed
The number of passed verifications.
Verification block rate
Verification not passed, interception rate.
Block rate for incorrect answers
Interception rate due to incorrect answers.
Security policy interception rate
Interception rate due to security policy enforcement.
Requests to verify tickets
The number of ticket verifications initiated by a server.
Ticket verification requests passed
The number of passed ticket verifications.
Ticket verification requests blocked
The number of blocked ticket verification requests.

Use limits

QPS limit

1. Queries Per Second (QPS) is limited to 1,000 for ticket verification.
2. When QPS exceeds 1,000 for the ticket verification API calls, an error is returned (RequestLimitExceeded).
3. To change the limit, submit a ticket or contact us.

FAQs

If you have any questions when using the service, please see FAQs About Features.
Contact Us

Contact our sales team or business advisors to help your business.

Technical Support

Open a ticket if you're looking for further assistance. Our Ticket is 7x24 avaliable.

7x24 Phone Support
Hong Kong, China
+852 800 906 020 (Toll Free)
United States
+1 844 606 0804 (Toll Free)
United Kingdom
+44 808 196 4551 (Toll Free)
Canada
+1 888 605 7930 (Toll Free)
Australia
+61 1300 986 386 (Toll Free)
EdgeOne hotline
+852 300 80699
More local hotlines coming soon